Month: May 2020

For the majority of export orders, we ship F.O.B. Shenzhen, but if you have any concerns, questions or special requirements, please be sure to let us know and we will be only-too-happy to help.

Shipping Options

Here is a simple introduction to shipping options:

Sea Shipping

Generally taking around 6 weeks, it is the most cost-effective way to ship particularly heavy products (like high-precision plastic injection molds from CHT!) or large-volume products, ike thousands of beautiful plastic parts.

As one of the greatest objections to China manufacturing, the long shipping times makes it a true challenge to then make necessary changes once the tool is at its' final destination.

To combat this, we go through stringent quality checks and controls to ensure that we only ever ship the very best products.

On the advice of some sound advice from industry peers, we also manufacture a small batch of 'emergency parts', in the event that - when the tool is on the ocean - the parts are needed right away. In this case, we can air-ship the parts to the client (or often the client's client) to tide them over until the tool arrives.

Air Freight

Taking around 1 week, Air Freight is ideal for non-urgent sample shipping and often preferred by the automotive industry for all products due to tight time restrictions and lead-times.

Express Companies

Ideal for urgent sample reviews, small-batch part reviews, and shipping project related items (like reports, plans, and other associated documents) this is both the fastest and most expensive way to ship parts and products around the World.

Before we start a project together, we will share our preferred methods of shipping, logistics partner-company details and express company account details, so that when the time comes to ship items, there is no confusion and no delay.

Many of our long-term trusted clients even relocate their own staff to locations within our facility to ensure on-site support and fast, clear communication at the time of order shipping.

We have the ability to pack, package, prepare, prime, and post your products to your exacting standards.

Please talk to our sales representatives or project managers today about your warehousing and storage requirements.

Pad Printing

Physical changes within the ink film both on the cliché and on the pad allow it to leave the etched image area in favor of adhering to the pad, and to subsequently release from the pad in favor of adhering to the substrate.

The unique properties of the silicone pad enable it to pick the image up from a flat plane and transfer it to a variety of surfaces, such as flat, cylindrical, spherical, compound angles, textures, concave, or convex surfaces.

Pad-printing is one of the many secondary services we offer at CHT that can be incorporated into any part of your production requirements.

We ave experience in printing onto various materials for the medical, auto, home appliance, and office automation industries.

We have produced:

• Car interior control panels.
• Loudspeaker facias.
• Printer / Fax / Multi-purpose Machine panels.
• Telephones / Mobile handsets.
• Projectors.
• Medical Electrical Appliances.

Spray Painting

One of the many finish options available for your parts, spray painting offers an unlimited number of color options where plain raw material colors may not suffice.

Examples of this include brand color matching (for example 'Coca Cola™ Red®' is hard to match with raw material, but can be color-matched with spray painting).

Spray painting also offers a fast and accurate way to apply a micro-thin layer of paint to difficult surfaces in a minimal amount of time, making it ideal for small-part projects, as well as complicated shapes.

At Changhong Technology, we have 16 spray painting stations in our secondary processing center and numerous industrial heaters/ovens on a 30m long conveyor-belt system to ensure fast and efficient production of your parts, to your specification.

Hot Stamping

Hot stamping is a dry printing method in which a heated die and foil are used to apply graphics to a surface. This is one method of security printing.

Hot Stamping Process

Hot stamping is a straightforward process:

• A die is mounted and heated.
• Foil is positioned above the material to be imprinted.
• A combination of heat, dwell time, pressure and stripping time control the quality of the stamp.

Foil stamping is environmentally friendly due to it being a dry process. It does not use solvents or inks and does not create any harmful vapors.

A successful hot stamping job is directly related to the quality of the original artwork. In order to ensure the highest quality reproduction of an imprint, the original artwork should be "camera-ready". The better the artwork at the beginning, the better the imprint reproduction result. The key to a successful hot stamping job is threefold; the first is creating a fixture to support the part firmly under the decorating area. Second, the fixture must also position the part for repeatability of the graphic location. And third, the fixture must allow the operator to easily load and unload the part from the fixture.

Ultrasonic Welding

Ultrasonic Welding is a technique used to permanently bond two pieces of plastic together. It is often used when manufacturing home appliances or electrical items that are not intended to be opened after production.

These include:

• Computer Mouse.
• Remote Control Device.
• Electric Toothbrush.
• Plastic Flashlights (like dive lights).
• Handheld Games consoles.

The permanent seal means that the item would have to be destroyed for an end-user to access the inner-workings of the device. This can ensure the owner does not damage it, it can add extra protection of patented and protected technology, can provide water-proof characteristics, and can provide a strong, smooth seal along edges.

At Changhong Technology, we offer ultrasonic welding to any projects that require it. The machine can either be located in the injection workshop for instant welding after injection or further down the production line to suit your assembly requirements.

Assembly / EMS

Planning

Every lean assembly line starts with good planning.

We calculate a line based on the following factors:

Task Outcome: This might be full or sub-assembly, with key identifying output goals.

Takt Time: The target time in seconds it takes to complete the entire task.

Number of steps: bite-size steps to work through to complete the task.

Monthly Output Rate: The number of completed items you require each month.

Facilities requirements: Number of staff; Number of lines; Physical size of each line; Utilities (electricity, water, etc.).

Testing Requirements: How to ensure the product is ready for the next stage, but further work or sent to market. This stage also helps us plan the test equipment.

Reporting: Usually weekly, as specified by the client.

Work Instructions: A clear, visual overview of each step of the assembly process.

Our Assembly Experience

For a number of years we have been producing high-volume full-assembly and sub-assembly parts for some of the Auto, Medical, and OA Industries' biggest movers and shakers.

From steering wheel electric units to complete fax / copy / scanner machines, urine bags to insulin pens, we have experience designing, planning, executing, and maintaining ultra-efficient assembly systems in any of our multiple locations.

Production First

Many of our assembly projects have come about from clients producing parts with us, who then require assembly and packaging services, but want to keep everything under one roof. This saves on management costs, time, and helps by giving you just one single point of communication from start to finish.

Cost Savings

Despite the obvious time and management cost savings by keeping production and assembly at Changhong Technology, we can also offer otherwise hard-to-obtain savings in areas of raw material purchase, sub-component, and parts purchase and in-coming parts inspection. Being a well-established Chinese brand, we are in a strong position to source the best parts and materials at the right price, saving the client on taxes and additional fees wherever we can.

ISO Class 8 Medical Clean Room

For products requiring a 'clean room' environment for production, our 4,000m² ISO class 8 100K clean room offers the ideal environment for both plastic parts production, medical consumables sub, and full assembly, testing, inspection, and packaging.

In instances where a line also has ISO Class 7 requirements, we have - in the past - created 10K (Class 7) spaces within the Class 8 cleanroom space so as to accommodate the particular requirements.

Through years of experience, we have come to appreciate that no 2 assembly projects are the same. Whilst assembly, on the whole, has shared values, such as those listed above, each and every project requires the careful attention of our line planners, managers, and engineers to ensure that the optimal line is put in place.

Contact us today to discuss your next project and let us show you how we can turn your targets into our purpose.

CHT injection molding production management must have a deep understanding of injection molding production management system, data cost management systems, quality management systems, and PIE management. It is necessary to design a scientific and feasible management plan according to the actual situation of the enterprise at this stage, and only through comprehensive system improvement Organizational structure, standardize production management process, formulate injection molding process standardization, and equipment mold maintenance management system; at the same time, establish a correct working concept, and earnestly implement PDCA management methods, continuously optimize production process flow, and enhance the cost awareness of personnel in various positions. Fundamentally prevent various major abnormal problems in injection molding production.

A: Organizational structure

(CHT believes that the establishment of the injection molding production management system should be based on the organizational structure. The organizational chart and job description are very important signs of the injection molding production management factory.)

B: Production management system

(CHT continuously adjusts and optimizes the production management process to face the rapidly changing market and quickly respond to customer needs. The injection molding production management system also needs to be refined to improve operational efficiency and reduce operations cost, it is necessary to be able to adapt to the rapid launch of new services and continuous refinement of management needs with the rapid deployment of new processes.)

C: Quality management system

(CHT "Product quality is the life of an enterprise". To produce high-quality products, we need to work together, be familiar with every detail in each link, and strengthen each key point Controlling and forming high-quality products is a working concept through design and management; scientifically prevent the occurrence of problems before mass production, strengthen inspection control and self-inspection during mass production, etc.)

① Standardization of injection molding process

(Production process is the core foundation to ensure product quality. Quality standards determine process standards. Injection molding process standards should be divided into injection molding process parameter standards, operation, and packaging process standards.)

② Standardization of equipment and mold maintenance management

(The molding quality of products mainly depends on the equipment, molds, raw materials and injection molding process parameters, and stable equipment and molds. This requires us to implement thorough standardization of equipment and mold maintenance management.)

D: Injection cost data management/PIE management

(CHT is based on data management, and production management decisions are based on facts and data; ERP system is a good data management tool, and related systems have been developed according to the actual situation to collect and organize data carefully. Data analysis ensures that the data is objective and truthful. It provides a basis for production management decision-making and performance evaluation; classifies, counts, and analyzes various quality defects in accordance with the prescribed procedures, holds quality improvement meetings every week, and develops major defect quality improvement plan items (import PIE management), And carefully organize the implementation.)

E: Training management system

(CHT attaches great importance to people are the core of the five elements of production, and all production plans are executed by people. When the plan is determined, the effect of the work mainly depends on the job skills and service awareness of the executive position. This must be based on your own reality. Develop a training management system to meet the development needs of the factory.)

1. In accordance with the training management system, the person responsible for the training project must be implemented, and the training plan must be made, with the focus on tracking the training effect until the requirements are met.

2. The training content focuses on the following points:

• Workshop site 5S management specifications
• Workshop equipment safety operation regulations
• Work process guidance
• Quality Standard Management Practice
• Production report filling specification
• Position responsibilities
• Improve the KPI performance appraisal management system

In order to avoid unnecessary time-wasting and troubles during mass production, it is indeed necessary to pay patience to adjust and control various processing conditions, find the best temperature and pressure conditions, and formulate standard test procedures, which can be used in establish daily working methods.

Mold trial process: (CHT mold trial verification standard)

1. Understand the relevant information of the mold:

It is best to obtain the design drawing and product drawing of the mold, and analyze it in detail by the mold technician and the tryout technician:

• Mold precautions (hot runner, valve, cylinder, ejector, slider, cooling, etc.)
• Product precautions (materials, deformation, sticking, ejection, metering, pressure, size, shrinkage, shape, etc.)

2. When it is determined that each part of the mold moves properly:

• The injection measurement settings are very important. (Principle: the lowest first segment is convenient for ejection measurement)
• Check the size and weight (compare with the design value)
• Evaluation of molding conditions; adjustment test of condition parameters above +/-10% (principle: medium speed and medium pressure, except for special)
• Mass production evaluation: (cycle, manipulator, temperature, valve, cooling, appearance, etc.)

3. Test model verification report:

• Mold improvement items: (runner, movement, exhaust, mold sticking, cooling, deformation, etc.)
• Product improvement items: (welding line, lack of glue, shrinkage, burrs, step difference, size, etc.)

Before assembling, carefully study and analyze the assembly drawing and part drawing, understand the function, characteristics, and technical requirements of each part, determine the assembly benchmark and finally achieve the product quality indicators, mold action accuracy, and various aspects in the use process. Item technical requirements assembly benchmark (strictly in accordance with the requirements of the drawings):

• The main working parts in the plastic mold such as core, cavity and insert are used as the reference parts for assembly, and other parts of the mold have assembly reference parts for preparation and assembly.
• Take the guide post and guide sleeve or the base surface of the mold template side as the assembly reference surface for trimming and assembly.

Mold assembly accuracy (the inspection tolerance of all parts of CHT mold before the next processing procedure: circulation within +/-0.015, while the following points need to be observed):

• The mutual accuracy of various parts, such as distance dimensional accuracy, coaxial, equality, perpendicularity, etc.
• Relative motion accuracies, such as transmission accuracy, linear motion, and rotary motion accuracy.
• Fitting precision and contact precision, such as fitting clearance, interference contact condition, etc.
• The wall thickness of the plastic molded part. When the mold is newly made, the wall thickness of the molded part should be biased to the lower limit of the size.

Confirmation after mold assembly (confirm strictly according to the list before CHT trial production):

• Glue feeding system (hot runner, needle valve, pump, main flow channel, branch runner, glue port, etc.)
• Actuating parts (inclined roof, block, slider, cylinder, valve, etc.)
• Ejection system (thimble, top block, inclined top, top plate, mechanical rotation, etc.)
• Cooling system (water cooling, air cooling, flow rate, oil cooling, electric heating, temperature, etc.)
• Protect safety devices (hot runners, guide posts, positioning, guides, lifting rings, clamping buttons, operation signs, etc.)

Our Mold Making Facility:

Mold Making: we have domestic, offshore, and in-house mold making facilities.

Once the prototype is finished, the mold can be designed and quoted. From there, our expertise in mold making will become invaluable. At CHT Mold, there are dozens of skilled experts with more than 20 years of mold manufacturing experience.

As a mold manufacturing process: prototype part design, quotation, DFM, MF, mold design, mold making, trial mold, inspection, mold improvement.

We have all of the equipment necessary to manufacture prototype and production molds in-house.

We have the ability to make molds in our company. Although there are other individual outsourcing, if the company chooses individual outsourcing, customers can know that the mold is handled by CHT professional department from beginning to end. An important part is that CHT takes full responsibility for the entire process. There is no blame between the mold maker and the third party. We are responsible for the entire process, and we eliminate the option to shirk responsibility to others. This means that you will get direct answers and resolved issues without having to act as an arbitrator between two independent companies.

We also provide low-cost overseas molds.

Additionally, we can offer lower-cost overseas molds if that suits the customer’s needs best. We still stand fully behind the quality of the mold and the finished product.

And we offer Mold Maintenance.

Molds (or tools) don’t run flawlessly on their own. One of the most important advantages of CHT is our ability to perform maintenance on molds in our shop. Our company uses on-site tools to maintain and repair molds as needed. This contributes heavily to our ability to keep production at the expected rate. We perform frequent checks on molds before and after use to ensure they are ready to operate impeccably.

Many companies don’t have the capability to provide such a comprehensive start to finish mold making experience.

For Changhong Technology and the design, development, and production of high-precision molds and plastics parts, a standard DFM report happens when we first review a part that we deem more complex than normal, or that might benefit from adjustments in design from the work of a Design team to the R&D team table, where thoughts and ideas turn into physical reality.

A Changhong Technology DFM report usually takes around 72 hours to produce and comprises 2 parts:

1. Requirements Gathering

Part Detail	Part Type	Part Detail	Accessory Detail
Part Number / Part Name: Raw Material of the Part: Shrinkage of the plastic material: The color of the port: The finishing of the part: The thickest wall: The thinnest wall: Part dimention:	Cosmetic: Yes / NO Functional: Yes / NO	Cavity Steel / Core Steel: Mold base steel: A/B plate steel: Cavity: Warranty: The clamping force of the injection machine (Machine Tonnage): Injection Gate: Molding Cycle: Runner Weight: Part Weight: Mold Size:	Mold Base: Standard ( Such as LKM ) / Customize Sprue / Nozzle: CHT Standard / Custom-ize Hydraulic Cylinders: Yes / No Hot Runner: Yes / No Guide Bush: Standard / Custom Others: Standard / Customize

2. Mold & Part Analysis

Thickness Analysis — determine the thickness Of the wall according to the fluidity Of the material to avoid shrinkage or unfilled;

Draft Analysis - determine a part line, add some draft to make demolding easily;

3D Structure Analysis - To see if there is an undercut that would be removed; To simplify the structure if it is necessary. To determine the mold structure according to the 3D structure of the mold. In one word, to make the part demolding successfully and be available for mass production; Including:

• If a lift is needed. If yes, please display the 3D dynamic effect;
• If the slide is needed. If it is, show the direction of the slide;
• If there is any other accessories need;

Mold Flow Analysis - to determine the injection gate, including gate type, gate number, and gate location; To determine cool system - the layout and the diameter of cool water runner;

The Layout of the Mold - shows the layout of the mold, the 2D drawing of the mold.